1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The photon of hard gamma radiation knocks a proton out of $${}_{12}^{24}Mg$$ nucleus to form
A
the isotope of parent nucleus
B
the isobar of parent nucleus
C
the nuclide $${}_{11}^{23}Na$$
D
the isobar of $${}_{11}^{23}Na$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
t1/4 can be taken as the time taken for the concentration of a reactant to drop to $$3 \over 4$$ of its initial value. If the rate constant for a first order reaction is K, the t1/4 can be written as
A
0.10 / K
B
0.29 / K
C
0.69 / K
D
0.75 / K
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A schematic plot of $$ln$$ $${K_{eq}}$$ versus inverse of temperature for a reaction is shown below

AIEEE 2005 Chemistry - Chemical Kinetics and Nuclear Chemistry Question 124 English
The reaction must be
A
highly spontaneous at ordinary temperature
B
one with negligible enthalpy change
C
endothermic
D
exothermic
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
In a first order reaction, the concentration of the reactant decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is
A
30 minutes
B
60 minutes
C
7.5 minutes
D
15 minutes
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12